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铝氧化颜色着色。其他颜色的着色工艺有:先浸入铜盐溶液后浸渍硫化物溶液,或是从硫酸铜和亚砷酸钠之间的反应都可以得到绿色膜层:橙色膜则从酒石酸锑钾和硫化氢反应获得;交流电解的硫酸膜含有相当数量的游离硫在某些稀盐溶液中,能与重金属化合而使膜层着色,见表-11。着色之前膜层用氨溶液清洗以除去孔隙中残存的硫酸,这样可使生成的硫化物... 阅1 转自独狼书屋 公众公开 16-12-16 18:21 |
阅58 转0 评0 公众公开 15-04-21 10:06 |
Below is a guide that lists the diameter (in millimetres) of each PE rating.The PE rating is a constant measurement, so while two lines advertised as being rated to 50lb may actually test at different breaking strains, two lines with the same PE rating will always be the same diameter.For instance, YGK Galis Ultra Jig... 阅130 转0 评0 公众公开 13-08-28 15:20 |
阅6 转自bermuda 公众公开 13-07-01 09:12 |
常用英语谚语常用英语谚语2010-11-17 11:41.don’t brush me off 不要敷衍我。let’s go Dutch 我们各付各的吧。don’t turn me down 不要拒绝我。don’t let me down 别叫我失望。to look one way and row another声东击西 .to suffer for one’s wisdom. 聪明反被聪明误。beyond one’s grasp. 鞭长莫及。if you wish to be the best man, yo... 阅34 转0 评0 公众公开 12-05-18 15:16 |
阅77 转0 评0 公众公开 11-03-22 12:29 |